A Frost Advisory is in effect for parts of Eastern Middle Tennessee where temperatures should drop to the mid 30s for lows (remember, the ground is a solid object and can drop down to 32° even when the air above it is in the mid 30s).
I can't rule out that some frost could occur outside of the Advisory area in rural area low pockets. Here in the city we expect a low of around 40°, but as usual it will be cooler away from the concrete and asphalt.
But a nice Easter weekend is in store. Highs on Saturday afternoon should touch the low 70s under sunny skies.
For Easter sunrise service temperatures should be in the upper 40s to near 50°. Easter Sunday will feature some morning clouds, then some sunshine and highs again in the low 70s.
Another cold front will arrive late Monday that may yield even higher frost chances by Wednesday morning.